README

The francerz\access-manager library provides a PSR-15 middleware class that manages access control to routes based on granted permissions.

Installation

You can install the library via Composer. Run the following command:

composer require francerz/access-manager

Usage

Using Slim Framework

1. Create an UserGrantsProviderInterface implementation to retrieve current user grants.

   use Francerz\AccessManager\UserGrantsProviderInterface;
   
   class CurrentUserGrantsProvider implements UserGrantsProviderInterface
   {
       public function getUserGrants(): string
       {
           // Returns the current user grants.
           return $_SESSION['user_grants'];
       }
   }

2. Configure the access middleware in your Slim\App routing:

   use Francerz\AccessManager\AccessMiddleware;
   use Slim\Routing\RouteCollectorProxy;
   
   $app = new \Slim\App();
   
   // A PSR-17 ResponseFactory implemenation
   $responseFactory = new \GuzzleHttp\Psr7\HttpFactory();
   
   $userPermissionProvider = new CurrentUserGrantsProvider();
   $accessMiddleware = new AccessMiddleware($userPermissionProvider, $responseFactory);
   
   $app->get('[/]', [HomeController::class, 'indexGet'])
       ->addMiddleware($accessMiddleware->allow('user'));
   
   $app->group('/admin', function(RouteCollectorProxy $route) {
       // Restricted admin routes.
       $route->get('[/]', [AdminController::class, 'indexGet']);
   })->addMiddleware($accessMiddleware->allow('admin'));

Permission Syntax

The allow method accept a permission string with a syntax similar to boolean logic:

• Use space to separate individual permissions; each space acts as an AND operator.
• Use character | to represent an OR operator, e.g., 'read | write'.

License

This library is licensed under the MIT License. see the LICENSE file for details.